CN202178562U - Leakage monitoring device - Google Patents
Leakage monitoring device Download PDFInfo
- Publication number
- CN202178562U CN202178562U CN2011203129321U CN201120312932U CN202178562U CN 202178562 U CN202178562 U CN 202178562U CN 2011203129321 U CN2011203129321 U CN 2011203129321U CN 201120312932 U CN201120312932 U CN 201120312932U CN 202178562 U CN202178562 U CN 202178562U
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- China
- Prior art keywords
- circuit
- electric
- leakage
- power
- audio frequency
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Emergency Protection Circuit Devices (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
A leakage monitoring device, comprising a leakage detecting circuit, a rectifying circuit, an audio oscillating circuit and a breaker circuit, wherein the leakage detecting circuit, the rectifying circuit and the audio oscillating circuit are in turn connected; the leakage detecting circuit is also connected with the breaker circuit and the power socket. When the power socket is connected with the leakage current of the pin via the leakage detecting circuit, the rectifying circuit provides a power for the audio oscillating circuit and the audio oscillating circuit generates an alarm sound via an electric ceramic sheet so as to hint the user to cut off the power of the power socket via a breaker circuit.
Description
Technical field
The utility model relates to a kind of safety monitoring device, and supervising device especially leaks electricity.
Background technology
According to the household electrical appliance safe requirement; Electrical equipment such as the washing machine of daily family expenses, refrigerator, electric iron, electric heater all must adopt three-pin plug and the socket that has the ground protection industrial siding; But the general residential building of China is not considered the ground connection facility, does not have the ground protection line in the house wiring yet, bumps the shell phenomenon in case electric leakage takes place electrical appliance; Just unavoidably electric shock accidents will take place, jeopardize personal safety.
Summary of the invention
In order to overcome the potential safety hazard in the existing household electrical appliances use, the utility model provides a kind of electric leakage supervising device, and it can be when the metal shell of household electrical appliance be charged; Not only send sound and light alarm automatically, in time remind the user, simultaneously deenergization; Avoid jeopardizing personal safety; Be convenient to the user and in time overhaul electrical appliance, get rid of potential safety hazard, avoid the generation of electric shock accidents.
The utility model solves the technical scheme that its technical problem adopted: the electric leakage supervising device; Comprise electric-leakage detection circuit, rectification circuit, audio frequency oscillating circuit; Power-down circuit; It is characterized in that: electric-leakage detection circuit, rectification circuit, audio frequency oscillating circuit connect successively, and electric-leakage detection circuit also is connected with power-down circuit, supply socket successively.When electric-leakage detection circuit detects the leakage current of supply socket grounding pin; For the audio frequency oscillating circuit power supply is provided through rectification circuit; The audio frequency oscillating circuit then sends chimes of doom through the electroceramics sheet, reminds the user and passes through the power supply disconnection of power-down circuit with supply socket.
The beneficial effect of the utility model is, can be simple in structure, and with low cost, remind automatically, improve safety, higher utility is arranged.
Description of drawings
Fig. 1 is the theory diagram of the utility model; Fig. 2 is the electric structure chart of the utility model.
Embodiment
In Fig. 1; The electric leakage supervising device; Comprise electric-leakage detection circuit 1, rectification circuit 2, audio frequency oscillating circuit 3, power-down circuit 4 is characterized in that; Electric-leakage detection circuit 1, rectification circuit 2, audio frequency oscillating circuit 3 connect successively, and electric-leakage detection circuit 1 also is connected with power-down circuit 4, supply socket 5 successively.When electric-leakage detection circuit 1 detects the leakage current of supply socket 5 grounding pins; For audio frequency oscillating circuit 3 power supply is provided through rectification circuit 2; 3 of audio frequency oscillating circuits send chimes of doom through the electroceramics sheet, remind the user and through power-down circuit 4 power supply of supply socket 5 are broken off.
In Fig. 2, D1 and D2 are rectifier diodes, and unijunction transistor VT and resistance R 2, R3 and piezoelectric ceramic piece Y constitute an audio frequency oscillator, and the resistance of regulating R3 can change frequency of oscillation, and R2 is a dropping resistor.R1 is the current-limiting resistance of neon bulb.During the electrical appliance operate as normal, the circuit non-transformer is not worked; When electrical appliance (like electric heater) bumps shell when electric leakage, leakage current is divided into two-way behind the earth jack of XP grounding pin and XS: one tunnel zero line N through resistance R 1, neon bulb Ne, diode D2 to power supply, the luminous warning of Ne; Another road is through resistance R 2 and D2 step-down rectifier, for audio frequency oscillator provides power supply, makes the piezoelectric ceramic piece Y warning of sounding, and reminds the user, and power-down circuit adopts 220V, and the control of cutting off the power supply of the relay of 10A prevents to leak electricity and jeopardizes personal safety.
Claims (1)
1. electric leakage supervising device; Comprise electric-leakage detection circuit (1), rectification circuit (2), audio frequency oscillating circuit (3), power-down circuit (4); It is characterized in that; Electric-leakage detection circuit (1), rectification circuit (2), audio frequency oscillating circuit (3) connect successively, and electric-leakage detection circuit (1) also is connected with power-down circuit (4), supply socket (5) successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203129321U CN202178562U (en) | 2011-08-25 | 2011-08-25 | Leakage monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203129321U CN202178562U (en) | 2011-08-25 | 2011-08-25 | Leakage monitoring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202178562U true CN202178562U (en) | 2012-03-28 |
Family
ID=45868426
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203129321U Expired - Fee Related CN202178562U (en) | 2011-08-25 | 2011-08-25 | Leakage monitoring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202178562U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110196373A (en) * | 2019-06-18 | 2019-09-03 | 周芸 | Three core power outlet electric leakage alarming devices |
-
2011
- 2011-08-25 CN CN2011203129321U patent/CN202178562U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110196373A (en) * | 2019-06-18 | 2019-09-03 | 周芸 | Three core power outlet electric leakage alarming devices |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120328 Termination date: 20120825 |